GCC Code Coverage Report


Directory: gridformat/
File: gridformat/vtk/vtr_writer.hpp
Date: 2024-11-20 14:41:59
Exec Total Coverage
Lines: 57 58 98.3%
Functions: 60 65 92.3%
Branches: 80 144 55.6%

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1 // SPDX-FileCopyrightText: 2022-2023 Dennis Gläser <dennis.glaeser@iws.uni-stuttgart.de>
2 // SPDX-License-Identifier: MIT
3 /*!
4 * \file
5 * \ingroup VTK
6 * \copydoc GridFormat::VTRWriter
7 */
8 #ifndef GRIDFORMAT_VTK_VTR_WRITER_HPP_
9 #define GRIDFORMAT_VTK_VTR_WRITER_HPP_
10
11 #include <array>
12 #include <ranges>
13 #include <ostream>
14 #include <utility>
15 #include <string>
16 #include <optional>
17 #include <iterator>
18
19 #include <gridformat/common/field.hpp>
20 #include <gridformat/common/field_storage.hpp>
21 #include <gridformat/common/lvalue_reference.hpp>
22
23 #include <gridformat/grid/grid.hpp>
24 #include <gridformat/grid/type_traits.hpp>
25 #include <gridformat/vtk/common.hpp>
26 #include <gridformat/vtk/xml.hpp>
27
28 namespace GridFormat {
29
30 /*!
31 * \ingroup VTK
32 * \brief Writer for .vtr file format
33 */
34 template<Concepts::RectilinearGrid Grid>
35 class VTRWriter : public VTK::XMLWriterBase<Grid, VTRWriter<Grid>> {
36 using ParentType = VTK::XMLWriterBase<Grid, VTRWriter<Grid>>;
37 using CType = CoordinateType<Grid>;
38 static constexpr std::size_t dim = dimension<Grid>;
39 static constexpr std::size_t space_dim = 3;
40 static_assert(dim <= 3);
41
42 public:
43 struct Domain {
44 std::array<std::size_t, dim> whole_extent;
45 };
46
47 using Offset = std::array<std::size_t, dim>;
48
49 14216 explicit VTRWriter(LValueReferenceOf<const Grid> grid,
50 VTK::XMLOptions xml_opts = {})
51
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42648 : ParentType(grid.get(), ".vtr", true, std::move(xml_opts))
52 14216 {}
53
54 4122 VTRWriter as_piece_for(Domain domain) const {
55 4122 auto result = this->with(this->_xml_opts);
56 4122 result._domain = std::move(domain);
57 4122 result._offset = _offset;
58 4122 return result;
59 }
60
61 4122 VTRWriter with_offset(Offset offset) const {
62 4122 auto result = this->with(this->_xml_opts);
63 4122 result._offset = std::move(offset);
64 4122 result._domain = _domain;
65 4122 return result;
66 }
67
68 private:
69 9504 VTRWriter _with(VTK::XMLOptions xml_opts) const override {
70
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9504 return VTRWriter{this->grid(), std::move(xml_opts)};
71 }
72
73 4759 void _write(std::ostream& s) const override {
74
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9518 auto context = this->_get_write_context("RectilinearGrid");
75
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4759 _set_attributes(context);
76
77 4759 FieldStorage vtk_point_fields;
78 4759 FieldStorage vtk_cell_fields;
79
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29607 std::ranges::for_each(this->_point_field_names(), [&] (const std::string& name) {
80
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12663 vtk_cell_fields.set(name, VTK::make_vtk_field(this->_get_point_field_ptr(name)));
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12663 this->_set_data_array(context, "Piece/PointData", name, vtk_cell_fields.get(name));
82 });
83
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29607 std::ranges::for_each(this->_cell_field_names(), [&] (const std::string& name) {
84
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12660 vtk_cell_fields.set(name, VTK::make_vtk_field(this->_get_cell_field_ptr(name)));
85
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12660 this->_set_data_array(context, "Piece/CellData", name, vtk_cell_fields.get(name));
86 });
87
88
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4759 const auto coord_fields = _make_ordinate_fields();
89
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17380 for (unsigned dir = 0; dir < space_dim; ++dir)
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14277 this->_set_data_array(context, "Piece/Coordinates", "X_" + std::to_string(dir), *coord_fields[dir]);
91
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4207 this->_write_xml(std::move(context), s);
92 6415 }
93
94 4759 void _set_attributes(typename ParentType::WriteContext& context) const {
95 4759 _set_domain_attributes(context);
96 4759 _set_extent_attributes(context);
97 4759 }
98
99 4759 void _set_domain_attributes(typename ParentType::WriteContext& context) const {
100 using VTK::CommonDetail::extents_string;
101
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4759 if (_domain)
102
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12366 this->_set_attribute(context, "", "WholeExtent", extents_string(_domain->whole_extent));
103 else
104
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1911 this->_set_attribute(context, "", "WholeExtent", extents_string(this->grid()));
105 4759 }
106
107 4759 void _set_extent_attributes(typename ParentType::WriteContext& context) const {
108 using VTK::CommonDetail::extents_string;
109
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4759 if (int i = 0; _offset) {
110 4122 auto begin = (*_offset);
111
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4122 auto end = GridFormat::extents(this->grid());
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9918 std::ranges::for_each(end, [&] (std::integral auto& ex) { ex += begin[i++]; });
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12366 this->_set_attribute(context, "Piece", "Extent", extents_string(begin, end));
114 } else {
115
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1911 this->_set_attribute(context, "Piece", "Extent", extents_string(this->grid()));
116 }
117 4759 }
118
119 4759 std::array<FieldPtr, space_dim> _make_ordinate_fields() const {
120 4759 std::array<FieldPtr, space_dim> result;
121 2468 std::visit([&] <typename T> (const Precision<T>& prec) {
122
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9636 for (unsigned dir = 0; dir < space_dim; ++dir) {
123
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7227 if (dir < dim)
124
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6656 result[dir] = make_field_ptr(RangeField{ordinates(this->grid(), dir), prec});
125 else
126
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571 result[dir] = make_field_ptr(RangeField{std::vector<double>{}, prec});
127 }
128
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4759 }, this->_xml_settings.coordinate_precision);
129 4759 return result;
130 }
131
132 std::optional<Domain> _domain;
133 std::optional<Offset> _offset;
134 };
135
136 template<typename G>
137 VTRWriter(G&&, VTK::XMLOptions = {}) -> VTRWriter<std::remove_cvref_t<G>>;
138
139 namespace Traits {
140
141 template<typename... Args>
142 struct WritesConnectivity<VTRWriter<Args...>> : public std::false_type {};
143
144 } // namespace Traits
145 } // namespace GridFormat
146
147 #endif // GRIDFORMAT_VTK_VTR_WRITER_HPP_
148